fixed version bump

A bug fix in `fixed` necessitated a major version bump.

Author: ekmett

OpenGLRaw.cabal

@@ -691,7 +691,7 @@ library
     base         >= 4       && < 5,
     bytestring   >= 0.9     && < 0.11,
     containers   >= 0.3     && < 0.7,
-    fixed        >= 0.2     && < 0.3,
+    fixed        >= 0.2     && < 0.4,
     half         >= 0.2.2.1 && < 0.4,
     text         >= 0.1     && < 1.3,
     transformers >= 0.2     && < 0.6